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Setler79 [48]
3 years ago
5

7x + y^2; if x = -4 and y = 5

Mathematics
1 answer:
const2013 [10]3 years ago
8 0

Answer:

-3

Step-by-step explanation:

7x + y^2

subsitute

= 7x=7x-4= -28

=y^2=5^2= 25

-28 + 25= -3

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Help me solve this algebra 2 question.​
Ivenika [448]

Answer:

A

Step-by-step explanation:

Alright, this may come out weird on computer, but here we go.

First, you want to change this into a multiplication problem, with Keep change flip. So now it's (c^2-c-20/c^2-6c+5) * (3c-3/c^2-16). You then want to simplify some number down.

You can simplify the first part using the X game (not sure if you know this), but you put the c value at the top, and the B value at the bottom, and the two sides blank. These two values must add to equal the C value, but multiply to equal the B value, so you get -5 and 4 for the numerator of the top. Following this formula, and using difference of perfect squares, you'll end up with the following.

(c-5)(c+4)/(c-5)(c-1) * 3(c-1)/(c+4)(c-4)

You then need to cancel out your different groups, so you'll cancel out (c-5), (c+4), (c-1).

After all that, you'll end up with 3/c-4, so the answer is A.

8 0
3 years ago
3 thirds is less than 1 whole
ivanzaharov [21]
3/3 = 1 whole because if you have a pizza cut in thirds and nobody ate from it then you still have ONE WHOLE PIZZA LEFT
7 0
3 years ago
A rectangular prism with a volume of 4 cubic units is filled with cubes with side lengths of 1/3 unit
julia-pushkina [17]

Answer:

The volume of each cube  = (side)^3  = (1/3)^3  = 1/27 cubic units

The number of cubes  that will fill the prism  =

Vol of prism            4

__________  =    _____  =    4 * 27   =   108 cubes

Vol of cube            (1/27)

Step-by-step explanation:

8 0
3 years ago
Please explain what I have to do as well as answer the question, if the method works and the answer is correct, I'll give braini
Andreas93 [3]

Answer:

0.53

Step-by-step explanation:

0.533

Decimal places go 10ths, 100ths, 1000ths, and so on. The nearest hundred therefore, is the first 3. Looking at the next digit, which is 3, because it's less than 4, we know we have to round down, which makes the answer 0.53

3 0
3 years ago
Read 2 more answers
Solve and show work. 4-(6x+5)=7-2(3x+4)
luda_lava [24]
4-(6x + 5) = 7 - 2(3x + 4)
Distribute: 4 - 6x - 5 = 7 - 6x - 8
Combine like terms (constants): -1 - 6x = -1 - 6x
Add 1 to both sides: -6x = -6x
Divide both sides by -6: x = x

Hope this helps!
8 0
3 years ago
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